Isolate portion of line from log file, then print to screen
Clash Royale CLAN TAG#URR8PPP
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked Jan 17 at 16:45
GreNIX GreNIX
597
add a comment |
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked Jan 17 at 16:45
GreNIX GreNIX
597
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
Jan 17 at 16:47
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
Jan 17 at 16:52
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
Jan 17 at 16:53
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56
add a comment |
0
0
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked Jan 17 at 16:45
GreNIX GreNIX
597
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
grep
asked Jan 17 at 16:45
GreNIX GreNIX
597
asked Jan 17 at 16:45
GreNIX GreNIX
597
asked Jan 17 at 16:45
GreNIX GreNIX
597
asked Jan 17 at 16:45
GreNIX GreNIX
597
asked Jan 17 at 16:45
GreNIX GreNIX
597
597
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
Jan 17 at 16:47
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
Jan 17 at 16:52
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
Jan 17 at 16:53
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56
add a comment |
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
Jan 17 at 16:47
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
Jan 17 at 16:52
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
Jan 17 at 16:53
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56
from a file, or from a command? Just that text
dataset record count (etc) or only the matching (entire) lines?– Jeff Schaller
Jan 17 at 16:47
from a file, or from a command? Just that text
dataset record count (etc) or only the matching (entire) lines?– Jeff Schaller
Jan 17 at 16:47
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Are you using an Operating System whose grep supports the
-o flag? (GNU/Linux systems, mainly)– Jeff Schaller
Jan 17 at 16:52
Are you using an Operating System whose grep supports the
-o flag? (GNU/Linux systems, mainly)– Jeff Schaller
Jan 17 at 16:52
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
Jan 17 at 16:53
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
Jan 17 at 16:53
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56
add a comment |
1 Answer
1
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votes
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One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) ' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) '
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) ' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) '
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
add a comment |
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) ' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) '
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
add a comment |
2
2
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) ' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) '
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) ' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") print substr($0, RSTART, RLENGTH) '
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
answered Jan 17 at 16:55
Jeff SchallerJeff Schaller
40.8k1056129
40.8k1056129
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
add a comment |
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
I've tried
grep -Eo 'dataset [a-z A-Z 0-9]' but I'm not sure why it isn't working.– GreNIX
Jan 17 at 17:05
I've tried
grep -Eo 'dataset [a-z A-Z 0-9]' but I'm not sure why it isn't working.– GreNIX
Jan 17 at 17:05
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
I needed to add the + to the end of the bracket
– GreNIX
Jan 17 at 17:06
add a comment |
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from a file, or from a command? Just that text
dataset record count (etc)or only the matching (entire) lines?– Jeff Schaller
Jan 17 at 16:47
Just that portion of the log file line. Not the entire line itself
– GreNIX
Jan 17 at 16:48
Are you using an Operating System whose grep supports the
-oflag? (GNU/Linux systems, mainly)– Jeff Schaller
Jan 17 at 16:52
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
Jan 17 at 16:53
Sorry, -o man page isn't confusing; -w is.
– GreNIX
Jan 17 at 16:56